"Much of central New South Wales is covered in dust this morning and we should see that move towards the coast in the coming hours," he said.

The haze is reminiscent of a massive dust storm measuring 500 kilometers wide and 1,000 kilometers (620 miles) in length that struck New South Wales and Queensland in 2009, turning the sky a brilliant orange.

Narramore said the system may not be as large as the previous storm but could still pose health risks.

"At this stage it is not looking as big and intense as we saw in 2009 but we're definitely going to see visibility reduced and the wind pick up," he said.

The current dust storm was caused by strong winds ahead of a low pressure system that picked up masses of loose dust particles, the result of prolonged drought in the state, according to Australia's Bureau of Meteorology.

Australia is suffering from one of the worst droughts in living memory resulting in water shortages and failed crops. Farmer's livelihoods have been devastated as grazing fields have turned into dry, barren land.

In August, the whole of New South Wales, the country's most populous state, was declared 100% in drought. A month later the country experienced the driest month in more than a century.